David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 1 | /* Copyright (c) 2016, Google Inc. |
| 2 | * |
| 3 | * Permission to use, copy, modify, and/or distribute this software for any |
| 4 | * purpose with or without fee is hereby granted, provided that the above |
| 5 | * copyright notice and this permission notice appear in all copies. |
| 6 | * |
| 7 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 8 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 9 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 10 | * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 11 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| 12 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 13 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| 14 | |
| 15 | #include <openssl/ssl.h> |
| 16 | |
| 17 | #include <assert.h> |
| 18 | #include <string.h> |
| 19 | |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 20 | #include <utility> |
| 21 | |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 22 | #include <openssl/bytestring.h> |
| 23 | #include <openssl/err.h> |
| 24 | #include <openssl/hkdf.h> |
| 25 | #include <openssl/mem.h> |
| 26 | #include <openssl/stack.h> |
| 27 | #include <openssl/x509.h> |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 28 | |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 29 | #include "../crypto/internal.h" |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 30 | #include "internal.h" |
| 31 | |
| 32 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 33 | BSSL_NAMESPACE_BEGIN |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 34 | |
Robert Sloan | a27a6a4 | 2017-09-05 08:39:28 -0700 | [diff] [blame] | 35 | // kMaxKeyUpdates is the number of consecutive KeyUpdates that will be |
| 36 | // processed. Without this limit an attacker could force unbounded processing |
| 37 | // without being able to return application data. |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 38 | static const uint8_t kMaxKeyUpdates = 32; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 39 | |
Robert Sloan | d5c2215 | 2017-11-13 09:22:12 -0800 | [diff] [blame] | 40 | const uint8_t kHelloRetryRequest[SSL3_RANDOM_SIZE] = { |
| 41 | 0xcf, 0x21, 0xad, 0x74, 0xe5, 0x9a, 0x61, 0x11, 0xbe, 0x1d, 0x8c, |
| 42 | 0x02, 0x1e, 0x65, 0xb8, 0x91, 0xc2, 0xa2, 0x11, 0x16, 0x7a, 0xbb, |
| 43 | 0x8c, 0x5e, 0x07, 0x9e, 0x09, 0xe2, 0xc8, 0xa8, 0x33, 0x9c, |
| 44 | }; |
| 45 | |
Robert Sloan | c9abfe4 | 2018-11-26 12:19:07 -0800 | [diff] [blame] | 46 | // See RFC 8446, section 4.1.3. |
Robert Sloan | d9e572d | 2018-08-27 12:27:00 -0700 | [diff] [blame] | 47 | const uint8_t kTLS12DowngradeRandom[8] = {0x44, 0x4f, 0x57, 0x4e, |
| 48 | 0x47, 0x52, 0x44, 0x00}; |
Robert Sloan | d9e572d | 2018-08-27 12:27:00 -0700 | [diff] [blame] | 49 | const uint8_t kTLS13DowngradeRandom[8] = {0x44, 0x4f, 0x57, 0x4e, |
| 50 | 0x47, 0x52, 0x44, 0x01}; |
Robert Sloan | 0da4395 | 2018-01-03 15:13:14 -0800 | [diff] [blame] | 51 | |
Robert Sloan | c9abfe4 | 2018-11-26 12:19:07 -0800 | [diff] [blame] | 52 | // This is a non-standard randomly-generated value. |
| 53 | const uint8_t kJDK11DowngradeRandom[8] = {0xed, 0xbf, 0xb4, 0xa8, |
| 54 | 0xc2, 0x47, 0x10, 0xff}; |
Robert Sloan | 0da4395 | 2018-01-03 15:13:14 -0800 | [diff] [blame] | 55 | |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 56 | bool tls13_get_cert_verify_signature_input( |
| 57 | SSL_HANDSHAKE *hs, Array<uint8_t> *out, |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 58 | enum ssl_cert_verify_context_t cert_verify_context) { |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 59 | ScopedCBB cbb; |
| 60 | if (!CBB_init(cbb.get(), 64 + 33 + 1 + 2 * EVP_MAX_MD_SIZE)) { |
| 61 | OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 62 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 63 | } |
| 64 | |
| 65 | for (size_t i = 0; i < 64; i++) { |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 66 | if (!CBB_add_u8(cbb.get(), 0x20)) { |
| 67 | OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 68 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 69 | } |
| 70 | } |
| 71 | |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 72 | Span<const char> context; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 73 | if (cert_verify_context == ssl_cert_verify_server) { |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 74 | static const char kContext[] = "TLS 1.3, server CertificateVerify"; |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 75 | context = kContext; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 76 | } else if (cert_verify_context == ssl_cert_verify_client) { |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 77 | static const char kContext[] = "TLS 1.3, client CertificateVerify"; |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 78 | context = kContext; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 79 | } else if (cert_verify_context == ssl_cert_verify_channel_id) { |
| 80 | static const char kContext[] = "TLS 1.3, Channel ID"; |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 81 | context = kContext; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 82 | } else { |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 83 | OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 84 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 85 | } |
| 86 | |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 87 | // Note |context| includes the NUL byte separator. |
| 88 | if (!CBB_add_bytes(cbb.get(), |
| 89 | reinterpret_cast<const uint8_t *>(context.data()), |
| 90 | context.size())) { |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 91 | OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 92 | return false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 93 | } |
| 94 | |
| 95 | uint8_t context_hash[EVP_MAX_MD_SIZE]; |
| 96 | size_t context_hash_len; |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 97 | if (!hs->transcript.GetHash(context_hash, &context_hash_len) || |
| 98 | !CBB_add_bytes(cbb.get(), context_hash, context_hash_len) || |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 99 | !CBBFinishArray(cbb.get(), out)) { |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 100 | OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 101 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 102 | } |
| 103 | |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 104 | return true; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 105 | } |
| 106 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 107 | bool tls13_process_certificate(SSL_HANDSHAKE *hs, const SSLMessage &msg, |
| 108 | bool allow_anonymous) { |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 109 | SSL *const ssl = hs->ssl; |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 110 | CBS body = msg.body; |
| 111 | bssl::UniquePtr<CRYPTO_BUFFER> decompressed; |
| 112 | |
| 113 | if (msg.type == SSL3_MT_COMPRESSED_CERTIFICATE) { |
| 114 | CBS compressed; |
| 115 | uint16_t alg_id; |
| 116 | uint32_t uncompressed_len; |
| 117 | |
| 118 | if (!CBS_get_u16(&body, &alg_id) || |
| 119 | !CBS_get_u24(&body, &uncompressed_len) || |
| 120 | !CBS_get_u24_length_prefixed(&body, &compressed) || |
| 121 | CBS_len(&body) != 0) { |
| 122 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR); |
| 123 | OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 124 | return false; |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | if (uncompressed_len > ssl->max_cert_list) { |
| 128 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER); |
| 129 | OPENSSL_PUT_ERROR(SSL, SSL_R_UNCOMPRESSED_CERT_TOO_LARGE); |
| 130 | ERR_add_error_dataf("requested=%u", |
| 131 | static_cast<unsigned>(uncompressed_len)); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 132 | return false; |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 133 | } |
| 134 | |
| 135 | ssl_cert_decompression_func_t decompress = nullptr; |
| 136 | for (const auto* alg : ssl->ctx->cert_compression_algs.get()) { |
| 137 | if (alg->alg_id == alg_id) { |
| 138 | decompress = alg->decompress; |
| 139 | break; |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | if (decompress == nullptr) { |
| 144 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER); |
| 145 | OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CERT_COMPRESSION_ALG); |
| 146 | ERR_add_error_dataf("alg=%d", static_cast<int>(alg_id)); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 147 | return false; |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | CRYPTO_BUFFER *decompressed_ptr = nullptr; |
| 151 | if (!decompress(ssl, &decompressed_ptr, uncompressed_len, |
| 152 | CBS_data(&compressed), CBS_len(&compressed))) { |
| 153 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR); |
| 154 | OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_DECOMPRESSION_FAILED); |
| 155 | ERR_add_error_dataf("alg=%d", static_cast<int>(alg_id)); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 156 | return false; |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 157 | } |
| 158 | decompressed.reset(decompressed_ptr); |
| 159 | |
| 160 | if (CRYPTO_BUFFER_len(decompressed_ptr) != uncompressed_len) { |
| 161 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR); |
| 162 | OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_DECOMPRESSION_FAILED); |
| 163 | ERR_add_error_dataf( |
| 164 | "alg=%d got=%u expected=%u", static_cast<int>(alg_id), |
| 165 | static_cast<unsigned>(CRYPTO_BUFFER_len(decompressed_ptr)), |
| 166 | static_cast<unsigned>(uncompressed_len)); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 167 | return false; |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | CBS_init(&body, CRYPTO_BUFFER_data(decompressed_ptr), |
| 171 | CRYPTO_BUFFER_len(decompressed_ptr)); |
| 172 | } else { |
| 173 | assert(msg.type == SSL3_MT_CERTIFICATE); |
| 174 | } |
| 175 | |
| 176 | CBS context, certificate_list; |
Robert Sloan | 8437709 | 2017-08-14 09:33:19 -0700 | [diff] [blame] | 177 | if (!CBS_get_u8_length_prefixed(&body, &context) || |
Robert Sloan | fe7cd21 | 2017-08-07 09:03:39 -0700 | [diff] [blame] | 178 | CBS_len(&context) != 0 || |
Robert Sloan | 8437709 | 2017-08-14 09:33:19 -0700 | [diff] [blame] | 179 | !CBS_get_u24_length_prefixed(&body, &certificate_list) || |
| 180 | CBS_len(&body) != 0) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 181 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR); |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 182 | OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 183 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 184 | } |
| 185 | |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 186 | UniquePtr<STACK_OF(CRYPTO_BUFFER)> certs(sk_CRYPTO_BUFFER_new_null()); |
| 187 | if (!certs) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 188 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 189 | OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 190 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 191 | } |
| 192 | |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 193 | const bool retain_sha256 = |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 194 | ssl->server && hs->config->retain_only_sha256_of_client_certs; |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 195 | UniquePtr<EVP_PKEY> pkey; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 196 | while (CBS_len(&certificate_list) > 0) { |
| 197 | CBS certificate, extensions; |
| 198 | if (!CBS_get_u24_length_prefixed(&certificate_list, &certificate) || |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 199 | !CBS_get_u16_length_prefixed(&certificate_list, &extensions) || |
| 200 | CBS_len(&certificate) == 0) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 201 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR); |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 202 | OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_LENGTH_MISMATCH); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 203 | return false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 204 | } |
| 205 | |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 206 | if (sk_CRYPTO_BUFFER_num(certs.get()) == 0) { |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 207 | pkey = ssl_cert_parse_pubkey(&certificate); |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 208 | if (!pkey) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 209 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR); |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 210 | OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 211 | return false; |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 212 | } |
Robert Sloan | a27a6a4 | 2017-09-05 08:39:28 -0700 | [diff] [blame] | 213 | // TLS 1.3 always uses certificate keys for signing thus the correct |
| 214 | // keyUsage is enforced. |
Robert Sloan | 4c22c5f | 2019-03-01 15:53:37 -0800 | [diff] [blame] | 215 | if (!ssl_cert_check_key_usage(&certificate, |
| 216 | key_usage_digital_signature)) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 217 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 218 | return false; |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 219 | } |
| 220 | |
| 221 | if (retain_sha256) { |
Robert Sloan | a27a6a4 | 2017-09-05 08:39:28 -0700 | [diff] [blame] | 222 | // Retain the hash of the leaf certificate if requested. |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 223 | SHA256(CBS_data(&certificate), CBS_len(&certificate), |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 224 | hs->new_session->peer_sha256); |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 225 | } |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 226 | } |
| 227 | |
Robert Sloan | fe7cd21 | 2017-08-07 09:03:39 -0700 | [diff] [blame] | 228 | UniquePtr<CRYPTO_BUFFER> buf( |
| 229 | CRYPTO_BUFFER_new_from_CBS(&certificate, ssl->ctx->pool)); |
| 230 | if (!buf || |
| 231 | !PushToStack(certs.get(), std::move(buf))) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 232 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 233 | OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 234 | return false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 235 | } |
| 236 | |
Robert Sloan | a27a6a4 | 2017-09-05 08:39:28 -0700 | [diff] [blame] | 237 | // Parse out the extensions. |
| 238 | bool have_status_request = false, have_sct = false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 239 | CBS status_request, sct; |
| 240 | const SSL_EXTENSION_TYPE ext_types[] = { |
| 241 | {TLSEXT_TYPE_status_request, &have_status_request, &status_request}, |
| 242 | {TLSEXT_TYPE_certificate_timestamp, &have_sct, &sct}, |
| 243 | }; |
| 244 | |
Robert Sloan | 5d62578 | 2017-02-13 09:55:39 -0800 | [diff] [blame] | 245 | uint8_t alert = SSL_AD_DECODE_ERROR; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 246 | if (!ssl_parse_extensions(&extensions, &alert, ext_types, |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 247 | OPENSSL_ARRAY_SIZE(ext_types), |
| 248 | 0 /* reject unknown */)) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 249 | ssl_send_alert(ssl, SSL3_AL_FATAL, alert); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 250 | return false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 251 | } |
| 252 | |
Robert Sloan | a27a6a4 | 2017-09-05 08:39:28 -0700 | [diff] [blame] | 253 | // All Certificate extensions are parsed, but only the leaf extensions are |
| 254 | // stored. |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 255 | if (have_status_request) { |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 256 | if (ssl->server || !hs->config->ocsp_stapling_enabled) { |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 257 | OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 258 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 259 | return false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 260 | } |
| 261 | |
| 262 | uint8_t status_type; |
| 263 | CBS ocsp_response; |
| 264 | if (!CBS_get_u8(&status_request, &status_type) || |
| 265 | status_type != TLSEXT_STATUSTYPE_ocsp || |
| 266 | !CBS_get_u24_length_prefixed(&status_request, &ocsp_response) || |
| 267 | CBS_len(&ocsp_response) == 0 || |
| 268 | CBS_len(&status_request) != 0) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 269 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 270 | return false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 271 | } |
| 272 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 273 | if (sk_CRYPTO_BUFFER_num(certs.get()) == 1) { |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 274 | hs->new_session->ocsp_response.reset( |
| 275 | CRYPTO_BUFFER_new_from_CBS(&ocsp_response, ssl->ctx->pool)); |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 276 | if (hs->new_session->ocsp_response == nullptr) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 277 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 278 | return false; |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 279 | } |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 280 | } |
| 281 | } |
| 282 | |
| 283 | if (have_sct) { |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 284 | if (ssl->server || !hs->config->signed_cert_timestamps_enabled) { |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 285 | OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 286 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 287 | return false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 288 | } |
| 289 | |
| 290 | if (!ssl_is_sct_list_valid(&sct)) { |
| 291 | OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_PARSING_EXTENSION); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 292 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 293 | return false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 294 | } |
| 295 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 296 | if (sk_CRYPTO_BUFFER_num(certs.get()) == 1) { |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 297 | hs->new_session->signed_cert_timestamp_list.reset( |
| 298 | CRYPTO_BUFFER_new_from_CBS(&sct, ssl->ctx->pool)); |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 299 | if (hs->new_session->signed_cert_timestamp_list == nullptr) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 300 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 301 | return false; |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 302 | } |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 303 | } |
| 304 | } |
| 305 | } |
| 306 | |
Robert Sloan | a27a6a4 | 2017-09-05 08:39:28 -0700 | [diff] [blame] | 307 | // Store a null certificate list rather than an empty one if the peer didn't |
| 308 | // send certificates. |
Robert Sloan | fe7cd21 | 2017-08-07 09:03:39 -0700 | [diff] [blame] | 309 | if (sk_CRYPTO_BUFFER_num(certs.get()) == 0) { |
| 310 | certs.reset(); |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 311 | } |
| 312 | |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 313 | hs->peer_pubkey = std::move(pkey); |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 314 | hs->new_session->certs = std::move(certs); |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 315 | |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 316 | if (!ssl->ctx->x509_method->session_cache_objects(hs->new_session.get())) { |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 317 | OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 318 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 319 | return false; |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 320 | } |
| 321 | |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 322 | if (sk_CRYPTO_BUFFER_num(hs->new_session->certs.get()) == 0) { |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 323 | if (!allow_anonymous) { |
| 324 | OPENSSL_PUT_ERROR(SSL, SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 325 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_CERTIFICATE_REQUIRED); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 326 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 327 | } |
| 328 | |
Robert Sloan | a27a6a4 | 2017-09-05 08:39:28 -0700 | [diff] [blame] | 329 | // OpenSSL returns X509_V_OK when no certificates are requested. This is |
| 330 | // classed by them as a bug, but it's assumed by at least NGINX. |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 331 | hs->new_session->verify_result = X509_V_OK; |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 332 | |
Robert Sloan | a27a6a4 | 2017-09-05 08:39:28 -0700 | [diff] [blame] | 333 | // No certificate, so nothing more to do. |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 334 | return true; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 335 | } |
| 336 | |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 337 | hs->new_session->peer_sha256_valid = retain_sha256; |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 338 | return true; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 339 | } |
| 340 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 341 | bool tls13_process_certificate_verify(SSL_HANDSHAKE *hs, const SSLMessage &msg) { |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 342 | SSL *const ssl = hs->ssl; |
Steven Valdez | e7531f0 | 2016-12-14 13:29:57 -0500 | [diff] [blame] | 343 | if (hs->peer_pubkey == NULL) { |
Robert Sloan | a12bf46 | 2017-07-17 07:08:26 -0700 | [diff] [blame] | 344 | OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 345 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 346 | } |
| 347 | |
Robert Sloan | 8437709 | 2017-08-14 09:33:19 -0700 | [diff] [blame] | 348 | CBS body = msg.body, signature; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 349 | uint16_t signature_algorithm; |
Robert Sloan | 8437709 | 2017-08-14 09:33:19 -0700 | [diff] [blame] | 350 | if (!CBS_get_u16(&body, &signature_algorithm) || |
| 351 | !CBS_get_u16_length_prefixed(&body, &signature) || |
| 352 | CBS_len(&body) != 0) { |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 353 | OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 354 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 355 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 356 | } |
| 357 | |
Robert Sloan | e56da3e | 2017-06-26 08:26:42 -0700 | [diff] [blame] | 358 | uint8_t alert = SSL_AD_DECODE_ERROR; |
| 359 | if (!tls12_check_peer_sigalg(ssl, &alert, signature_algorithm)) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 360 | ssl_send_alert(ssl, SSL3_AL_FATAL, alert); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 361 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 362 | } |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 363 | hs->new_session->peer_signature_algorithm = signature_algorithm; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 364 | |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 365 | Array<uint8_t> input; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 366 | if (!tls13_get_cert_verify_signature_input( |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 367 | hs, &input, |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 368 | ssl->server ? ssl_cert_verify_client : ssl_cert_verify_server)) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 369 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 370 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 371 | } |
| 372 | |
Srinivas Paladugu | dd42a61 | 2019-08-09 19:30:39 +0000 | [diff] [blame^] | 373 | bool sig_ok = ssl_public_key_verify(ssl, signature, signature_algorithm, |
| 374 | hs->peer_pubkey.get(), input); |
| 375 | #if defined(BORINGSSL_UNSAFE_FUZZER_MODE) |
| 376 | sig_ok = true; |
| 377 | ERR_clear_error(); |
| 378 | #endif |
| 379 | if (!sig_ok) { |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 380 | OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SIGNATURE); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 381 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 382 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 383 | } |
| 384 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 385 | return true; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 386 | } |
| 387 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 388 | bool tls13_process_finished(SSL_HANDSHAKE *hs, const SSLMessage &msg, |
| 389 | bool use_saved_value) { |
David Benjamin | 1b24967 | 2016-12-06 18:25:50 -0500 | [diff] [blame] | 390 | SSL *const ssl = hs->ssl; |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 391 | uint8_t verify_data_buf[EVP_MAX_MD_SIZE]; |
| 392 | const uint8_t *verify_data; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 393 | size_t verify_data_len; |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 394 | if (use_saved_value) { |
| 395 | assert(ssl->server); |
| 396 | verify_data = hs->expected_client_finished; |
| 397 | verify_data_len = hs->hash_len; |
| 398 | } else { |
| 399 | if (!tls13_finished_mac(hs, verify_data_buf, &verify_data_len, |
| 400 | !ssl->server)) { |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 401 | return false; |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 402 | } |
| 403 | verify_data = verify_data_buf; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 404 | } |
| 405 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 406 | bool finished_ok = CBS_mem_equal(&msg.body, verify_data, verify_data_len); |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 407 | #if defined(BORINGSSL_UNSAFE_FUZZER_MODE) |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 408 | finished_ok = true; |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 409 | #endif |
| 410 | if (!finished_ok) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 411 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR); |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 412 | OPENSSL_PUT_ERROR(SSL, SSL_R_DIGEST_CHECK_FAILED); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 413 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 414 | } |
| 415 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 416 | return true; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 417 | } |
| 418 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 419 | bool tls13_add_certificate(SSL_HANDSHAKE *hs) { |
David Benjamin | 1b24967 | 2016-12-06 18:25:50 -0500 | [diff] [blame] | 420 | SSL *const ssl = hs->ssl; |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 421 | CERT *const cert = hs->config->cert.get(); |
Robert Sloan | 4c22c5f | 2019-03-01 15:53:37 -0800 | [diff] [blame] | 422 | DC *const dc = cert->dc.get(); |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 423 | |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 424 | ScopedCBB cbb; |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 425 | CBB *body, body_storage, certificate_list; |
| 426 | |
| 427 | if (hs->cert_compression_negotiated) { |
| 428 | if (!CBB_init(cbb.get(), 1024)) { |
| 429 | return false; |
| 430 | } |
| 431 | body = cbb.get(); |
| 432 | } else { |
| 433 | body = &body_storage; |
| 434 | if (!ssl->method->init_message(ssl, cbb.get(), body, SSL3_MT_CERTIFICATE)) { |
| 435 | return false; |
| 436 | } |
| 437 | } |
| 438 | |
| 439 | if (// The request context is always empty in the handshake. |
| 440 | !CBB_add_u8(body, 0) || |
| 441 | !CBB_add_u24_length_prefixed(body, &certificate_list)) { |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 442 | OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 443 | return false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 444 | } |
| 445 | |
Robert Sloan | 4c22c5f | 2019-03-01 15:53:37 -0800 | [diff] [blame] | 446 | if (!ssl_has_certificate(hs)) { |
Robert Sloan | a12bf46 | 2017-07-17 07:08:26 -0700 | [diff] [blame] | 447 | return ssl_add_message_cbb(ssl, cbb.get()); |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 448 | } |
| 449 | |
Robert Sloan | 5cbb5c8 | 2018-04-24 11:35:46 -0700 | [diff] [blame] | 450 | CRYPTO_BUFFER *leaf_buf = sk_CRYPTO_BUFFER_value(cert->chain.get(), 0); |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 451 | CBB leaf, extensions; |
| 452 | if (!CBB_add_u24_length_prefixed(&certificate_list, &leaf) || |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 453 | !CBB_add_bytes(&leaf, CRYPTO_BUFFER_data(leaf_buf), |
| 454 | CRYPTO_BUFFER_len(leaf_buf)) || |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 455 | !CBB_add_u16_length_prefixed(&certificate_list, &extensions)) { |
| 456 | OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 457 | return false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 458 | } |
| 459 | |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 460 | if (hs->scts_requested && cert->signed_cert_timestamp_list != nullptr) { |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 461 | CBB contents; |
| 462 | if (!CBB_add_u16(&extensions, TLSEXT_TYPE_certificate_timestamp) || |
| 463 | !CBB_add_u16_length_prefixed(&extensions, &contents) || |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 464 | !CBB_add_bytes( |
| 465 | &contents, |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 466 | CRYPTO_BUFFER_data(cert->signed_cert_timestamp_list.get()), |
| 467 | CRYPTO_BUFFER_len(cert->signed_cert_timestamp_list.get())) || |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 468 | !CBB_flush(&extensions)) { |
| 469 | OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 470 | return false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 471 | } |
| 472 | } |
| 473 | |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 474 | if (hs->ocsp_stapling_requested && cert->ocsp_response != NULL) { |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 475 | CBB contents, ocsp_response; |
| 476 | if (!CBB_add_u16(&extensions, TLSEXT_TYPE_status_request) || |
| 477 | !CBB_add_u16_length_prefixed(&extensions, &contents) || |
| 478 | !CBB_add_u8(&contents, TLSEXT_STATUSTYPE_ocsp) || |
| 479 | !CBB_add_u24_length_prefixed(&contents, &ocsp_response) || |
Robert Sloan | a94fe05 | 2017-02-21 08:49:28 -0800 | [diff] [blame] | 480 | !CBB_add_bytes(&ocsp_response, |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 481 | CRYPTO_BUFFER_data(cert->ocsp_response.get()), |
| 482 | CRYPTO_BUFFER_len(cert->ocsp_response.get())) || |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 483 | !CBB_flush(&extensions)) { |
| 484 | OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 485 | return false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 486 | } |
| 487 | } |
| 488 | |
Robert Sloan | 4c22c5f | 2019-03-01 15:53:37 -0800 | [diff] [blame] | 489 | if (ssl_signing_with_dc(hs)) { |
| 490 | const CRYPTO_BUFFER *raw = dc->raw.get(); |
| 491 | if (!CBB_add_u16(&extensions, TLSEXT_TYPE_delegated_credential) || |
Srinivas Paladugu | dd42a61 | 2019-08-09 19:30:39 +0000 | [diff] [blame^] | 492 | !CBB_add_u16(&extensions, CRYPTO_BUFFER_len(raw)) || |
| 493 | !CBB_add_bytes(&extensions, |
| 494 | CRYPTO_BUFFER_data(raw), |
Robert Sloan | 4c22c5f | 2019-03-01 15:53:37 -0800 | [diff] [blame] | 495 | CRYPTO_BUFFER_len(raw)) || |
| 496 | !CBB_flush(&extensions)) { |
| 497 | OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
| 498 | return 0; |
| 499 | } |
| 500 | } |
| 501 | |
Robert Sloan | 5cbb5c8 | 2018-04-24 11:35:46 -0700 | [diff] [blame] | 502 | for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(cert->chain.get()); i++) { |
| 503 | CRYPTO_BUFFER *cert_buf = sk_CRYPTO_BUFFER_value(cert->chain.get(), i); |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 504 | CBB child; |
| 505 | if (!CBB_add_u24_length_prefixed(&certificate_list, &child) || |
Robert Sloan | 4d1ac50 | 2017-02-06 08:36:14 -0800 | [diff] [blame] | 506 | !CBB_add_bytes(&child, CRYPTO_BUFFER_data(cert_buf), |
| 507 | CRYPTO_BUFFER_len(cert_buf)) || |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 508 | !CBB_add_u16(&certificate_list, 0 /* no extensions */)) { |
| 509 | OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 510 | return false; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 511 | } |
| 512 | } |
| 513 | |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 514 | if (!hs->cert_compression_negotiated) { |
| 515 | return ssl_add_message_cbb(ssl, cbb.get()); |
| 516 | } |
| 517 | |
| 518 | Array<uint8_t> msg; |
| 519 | if (!CBBFinishArray(cbb.get(), &msg)) { |
| 520 | OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 521 | return false; |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 522 | } |
| 523 | |
| 524 | const CertCompressionAlg *alg = nullptr; |
| 525 | for (const auto *candidate : ssl->ctx->cert_compression_algs.get()) { |
| 526 | if (candidate->alg_id == hs->cert_compression_alg_id) { |
| 527 | alg = candidate; |
| 528 | break; |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | if (alg == nullptr || alg->compress == nullptr) { |
| 533 | OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 534 | return false; |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 535 | } |
| 536 | |
| 537 | CBB compressed; |
| 538 | body = &body_storage; |
| 539 | if (!ssl->method->init_message(ssl, cbb.get(), body, |
| 540 | SSL3_MT_COMPRESSED_CERTIFICATE) || |
| 541 | !CBB_add_u16(body, hs->cert_compression_alg_id) || |
| 542 | !CBB_add_u24(body, msg.size()) || |
| 543 | !CBB_add_u24_length_prefixed(body, &compressed) || |
| 544 | !alg->compress(ssl, &compressed, msg.data(), msg.size()) || |
| 545 | !ssl_add_message_cbb(ssl, cbb.get())) { |
| 546 | OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 547 | return false; |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 548 | } |
| 549 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 550 | return true; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 551 | } |
| 552 | |
Robert Sloan | e56da3e | 2017-06-26 08:26:42 -0700 | [diff] [blame] | 553 | enum ssl_private_key_result_t tls13_add_certificate_verify(SSL_HANDSHAKE *hs) { |
David Benjamin | 1b24967 | 2016-12-06 18:25:50 -0500 | [diff] [blame] | 554 | SSL *const ssl = hs->ssl; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 555 | uint16_t signature_algorithm; |
David Benjamin | 1b24967 | 2016-12-06 18:25:50 -0500 | [diff] [blame] | 556 | if (!tls1_choose_signature_algorithm(hs, &signature_algorithm)) { |
Adam Vartanian | bfcf3a7 | 2018-08-10 14:55:24 +0100 | [diff] [blame] | 557 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); |
Robert Sloan | a12bf46 | 2017-07-17 07:08:26 -0700 | [diff] [blame] | 558 | return ssl_private_key_failure; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 559 | } |
Robert Sloan | a12bf46 | 2017-07-17 07:08:26 -0700 | [diff] [blame] | 560 | |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 561 | ScopedCBB cbb; |
Robert Sloan | a12bf46 | 2017-07-17 07:08:26 -0700 | [diff] [blame] | 562 | CBB body; |
| 563 | if (!ssl->method->init_message(ssl, cbb.get(), &body, |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 564 | SSL3_MT_CERTIFICATE_VERIFY) || |
| 565 | !CBB_add_u16(&body, signature_algorithm)) { |
| 566 | OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); |
Robert Sloan | a12bf46 | 2017-07-17 07:08:26 -0700 | [diff] [blame] | 567 | return ssl_private_key_failure; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 568 | } |
| 569 | |
Robert Sloan | a27a6a4 | 2017-09-05 08:39:28 -0700 | [diff] [blame] | 570 | // Sign the digest. |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 571 | CBB child; |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 572 | const size_t max_sig_len = EVP_PKEY_size(hs->local_pubkey.get()); |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 573 | uint8_t *sig; |
| 574 | size_t sig_len; |
| 575 | if (!CBB_add_u16_length_prefixed(&body, &child) || |
| 576 | !CBB_reserve(&child, &sig, max_sig_len)) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 577 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); |
Robert Sloan | a12bf46 | 2017-07-17 07:08:26 -0700 | [diff] [blame] | 578 | return ssl_private_key_failure; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 579 | } |
| 580 | |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 581 | Array<uint8_t> msg; |
Robert Sloan | e56da3e | 2017-06-26 08:26:42 -0700 | [diff] [blame] | 582 | if (!tls13_get_cert_verify_signature_input( |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 583 | hs, &msg, |
Robert Sloan | e56da3e | 2017-06-26 08:26:42 -0700 | [diff] [blame] | 584 | ssl->server ? ssl_cert_verify_server : ssl_cert_verify_client)) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 585 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); |
Robert Sloan | a12bf46 | 2017-07-17 07:08:26 -0700 | [diff] [blame] | 586 | return ssl_private_key_failure; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 587 | } |
| 588 | |
Robert Sloan | e56da3e | 2017-06-26 08:26:42 -0700 | [diff] [blame] | 589 | enum ssl_private_key_result_t sign_result = ssl_private_key_sign( |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 590 | hs, sig, &sig_len, max_sig_len, signature_algorithm, msg); |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 591 | if (sign_result != ssl_private_key_success) { |
Robert Sloan | a12bf46 | 2017-07-17 07:08:26 -0700 | [diff] [blame] | 592 | return sign_result; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | if (!CBB_did_write(&child, sig_len) || |
Robert Sloan | a12bf46 | 2017-07-17 07:08:26 -0700 | [diff] [blame] | 596 | !ssl_add_message_cbb(ssl, cbb.get())) { |
| 597 | return ssl_private_key_failure; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 598 | } |
| 599 | |
Robert Sloan | a12bf46 | 2017-07-17 07:08:26 -0700 | [diff] [blame] | 600 | return ssl_private_key_success; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 601 | } |
| 602 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 603 | bool tls13_add_finished(SSL_HANDSHAKE *hs) { |
David Benjamin | 1b24967 | 2016-12-06 18:25:50 -0500 | [diff] [blame] | 604 | SSL *const ssl = hs->ssl; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 605 | size_t verify_data_len; |
| 606 | uint8_t verify_data[EVP_MAX_MD_SIZE]; |
| 607 | |
David Benjamin | 1b24967 | 2016-12-06 18:25:50 -0500 | [diff] [blame] | 608 | if (!tls13_finished_mac(hs, verify_data, &verify_data_len, ssl->server)) { |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 609 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 610 | OPENSSL_PUT_ERROR(SSL, SSL_R_DIGEST_CHECK_FAILED); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 611 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 612 | } |
| 613 | |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 614 | ScopedCBB cbb; |
| 615 | CBB body; |
| 616 | if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_FINISHED) || |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 617 | !CBB_add_bytes(&body, verify_data, verify_data_len) || |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 618 | !ssl_add_message_cbb(ssl, cbb.get())) { |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 619 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 620 | } |
| 621 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 622 | return true; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 623 | } |
| 624 | |
Robert Sloan | 4c22c5f | 2019-03-01 15:53:37 -0800 | [diff] [blame] | 625 | bool tls13_add_key_update(SSL *ssl, int update_requested) { |
| 626 | ScopedCBB cbb; |
| 627 | CBB body_cbb; |
| 628 | if (!ssl->method->init_message(ssl, cbb.get(), &body_cbb, |
| 629 | SSL3_MT_KEY_UPDATE) || |
| 630 | !CBB_add_u8(&body_cbb, update_requested) || |
| 631 | !ssl_add_message_cbb(ssl, cbb.get()) || |
| 632 | !tls13_rotate_traffic_key(ssl, evp_aead_seal)) { |
| 633 | return false; |
| 634 | } |
| 635 | |
| 636 | // Suppress KeyUpdate acknowledgments until this change is written to the |
| 637 | // wire. This prevents us from accumulating write obligations when read and |
| 638 | // write progress at different rates. See RFC 8446, section 4.6.3. |
| 639 | ssl->s3->key_update_pending = true; |
| 640 | |
| 641 | return true; |
| 642 | } |
| 643 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 644 | static bool tls13_receive_key_update(SSL *ssl, const SSLMessage &msg) { |
Robert Sloan | 8437709 | 2017-08-14 09:33:19 -0700 | [diff] [blame] | 645 | CBS body = msg.body; |
David Benjamin | 95add82 | 2016-10-19 01:09:12 -0400 | [diff] [blame] | 646 | uint8_t key_update_request; |
Robert Sloan | 8437709 | 2017-08-14 09:33:19 -0700 | [diff] [blame] | 647 | if (!CBS_get_u8(&body, &key_update_request) || |
| 648 | CBS_len(&body) != 0 || |
David Benjamin | 95add82 | 2016-10-19 01:09:12 -0400 | [diff] [blame] | 649 | (key_update_request != SSL_KEY_UPDATE_NOT_REQUESTED && |
| 650 | key_update_request != SSL_KEY_UPDATE_REQUESTED)) { |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 651 | OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 652 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 653 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 654 | } |
| 655 | |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 656 | if (!tls13_rotate_traffic_key(ssl, evp_aead_open)) { |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 657 | return false; |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 658 | } |
| 659 | |
Robert Sloan | a27a6a4 | 2017-09-05 08:39:28 -0700 | [diff] [blame] | 660 | // Acknowledge the KeyUpdate |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 661 | if (key_update_request == SSL_KEY_UPDATE_REQUESTED && |
Robert Sloan | 4c22c5f | 2019-03-01 15:53:37 -0800 | [diff] [blame] | 662 | !ssl->s3->key_update_pending && |
| 663 | !tls13_add_key_update(ssl, SSL_KEY_UPDATE_NOT_REQUESTED)) { |
| 664 | return false; |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 665 | } |
| 666 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 667 | return true; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 668 | } |
| 669 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 670 | bool tls13_post_handshake(SSL *ssl, const SSLMessage &msg) { |
Robert Sloan | 8437709 | 2017-08-14 09:33:19 -0700 | [diff] [blame] | 671 | if (msg.type == SSL3_MT_KEY_UPDATE) { |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 672 | ssl->s3->key_update_count++; |
Robert Sloan | 4c22c5f | 2019-03-01 15:53:37 -0800 | [diff] [blame] | 673 | if (ssl->quic_method != nullptr || |
Robert Sloan | cbf5ea6 | 2018-11-05 11:56:34 -0800 | [diff] [blame] | 674 | ssl->s3->key_update_count > kMaxKeyUpdates) { |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 675 | OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MANY_KEY_UPDATES); |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 676 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 677 | return false; |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 678 | } |
| 679 | |
Robert Sloan | 8437709 | 2017-08-14 09:33:19 -0700 | [diff] [blame] | 680 | return tls13_receive_key_update(ssl, msg); |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 681 | } |
| 682 | |
David Benjamin | f0c4a6c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 683 | ssl->s3->key_update_count = 0; |
| 684 | |
Robert Sloan | 8437709 | 2017-08-14 09:33:19 -0700 | [diff] [blame] | 685 | if (msg.type == SSL3_MT_NEW_SESSION_TICKET && !ssl->server) { |
| 686 | return tls13_process_new_session_ticket(ssl, msg); |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 687 | } |
| 688 | |
Robert Sloan | 921ef2c | 2017-10-17 09:02:20 -0700 | [diff] [blame] | 689 | ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE); |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 690 | OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_MESSAGE); |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 691 | return false; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 692 | } |
Robert Sloan | b6d070c | 2017-07-24 08:40:01 -0700 | [diff] [blame] | 693 | |
Robert Sloan | 726e9d1 | 2018-09-11 11:45:04 -0700 | [diff] [blame] | 694 | BSSL_NAMESPACE_END |